Fom Richardson's article

"Embryos of different species of vertebrate share a common organisation and often look similar. Adult differences among species become more apparent through divergence at later stages"

Even though Richardson explains that he does not agree with above claim I dont really undestand how you can claim that it has nothing to do with what we have been talking about
If someone does not agree with a certain theory it means that some else support that theory
At an early stage embryos look similar.This is a matter of fact
Just by chance ?
Maybe ,but for sure it is an "hint" if not a "prove" of a common origin